Improvement in telegraphs-insulators



l @sind gisten WILLIAM W. BALDWIN.

@met Gll'jirr.

'or' CLEVELAND, omo.

Lenm Pam: N.1o5,625, and my. '26, 1ero.

IHPRVEMENT IN TLEGRAPHJNSULATORS.

-m Schedule referred to in than Letten Patent and making part of 'chrome To allwhom t-may concern:

Beitknown that I, WILLIAM W. BALDWIN, of Gleveland, in the county of Cuyahoga and State of bio, have invented n'new and useful Improvement in Telegrnph-Insulators; and I do hereby declare that the tollowing is a full, clear, and exa'ct description there of, suiiicient to enable those skilled in the art to which my invention apport-:tins tofnlly understand audio make and use' the same, reference being had to the vnceompunying drawing, and forming part of this specification, in which Figure 1 is a perspective view. Figure 2 is a vert-ical section.

Like letters' of reference indicate like parts. This invention consists in the arrangement of two cust-metal sections, A and B, and interposing between them a. suitablczinsulating substance, C. 'lhe outside section or shell A is intended/ns protection to the insulating substance, and to which is to be attached the telegraph-wire, while the inner section B ,is intended to be placed on a pin on u telegraph-pole,-

thus making a. cheap, durable, and reliable insulator.

In the drawing- A represents :Least-metal shell or case, which may bc in-size and form sniteble for strength and taste.

The inside surface of this shell muy have a. screw-I thread or annular rings cut or'cast on it.

B represents a second shell, having a'screwthreud or ribs on its outer surface, andissuiciently smaller thau'the outer shell A to provide space for the 'insulating substance O. The inside surface of the shelLB also has a screw-thread or barbs upon it, which are intended to secure it to the pin upon which it is drivenfand prevents its vbeing easily pulled olf.

The insulator used maybe porcelain, guttapereha,

paladino, wax, `or other suitable substance, whichv will insure a, disconnection of the electricity between the two shells.

The lower end or mouth of v,the shell A is mede the mouths of the shell B, which is made flaring or bell-shaped. The object of this is -to p'reventwa'ter or moisture getting in. It' water should spatteE-up in- Lside ofthe shell it een only moist-en the pin. and under side of the shell B." Theopen space 'between it and the .shell A prevents its reaching it.

In putting these shells together, the shell B is iirst wound around with cotton, or other suitable fabric, and it is then dipped-into the insulating substance,

' coating it ull over both inside md out. The'inside 'of the shell A is also coated with the insulator. l When the shell B is inserted in the shell A, and screwed down .into place, i piece of glass, fl, may be placed-between the ends of the shells, so as to prevent 4the two-metal surfnces-coming in contact.

By this method of constructing a'telegrnph-insulu tor, the shells muy be mncle of castmetuhor wrought, as may be most convenient, `andthe insulator is perfectly protected from the dangers of injury from with- Witnesses:

spherical and hollow, to provide splice betweenitnnd 

